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Zero Conditional
The zero conditional is used to talk about general truths, scientific facts, and things that are always true when the conditions are met.
Structure:
  • If + Present Simple, Present Simple
Examples:
  • If water reaches 100 degrees Celsius, it boils.
  • If you heat ice, it melts.
  • If it rains, the ground gets wet.
Usage

The zero conditional is primarily used in the following contexts:

1. General Truths and Facts:
It expresses situations that are always true and can be proven.
    Examples
  • If you mix red and blue, you get purple.
2. Scientific Facts:
Used to state scientific facts or laws that hold true universally.
    Examples
  • If you freeze water, it turns into ice.
3. Habitual Actions:
Describes habits or routines that happen as a result of certain conditions.
    Examples
  • If you touch a flame, it burns.
4. Instruction and Rules:
Commonly used in instructions and rules where one action leads to another.
    Examples
  • If you press this button, the machine starts.
Examples in Context
    Weather:
  • If it gets too hot, we turn on the air conditioning.
    Cooking:
  • If you add salt to water, it boils faster.
    Safety:
  • If you see a stop sign, you must stop your vehicle.
Summary
The zero conditional is a straightforward way to express facts, general truths, and habitual actions. It emphasizes the relationship between cause and effect, making it a useful structure in both written and spoken English.